Optimum Nutrition Serious Mass-5.4kg

Serious Mass is a high-calorie weight gainer designed for individuals who struggle to gain weight or consume enough calories through food alone. Delivering over 1,250 calories per serving, it provides a powerful blend of protein, carbohydrates and added creatine to support muscle growth, recovery, and overall mass gain.

This formula is ideal for hard gainers, athletes with high energy demands, and anyone looking to significantly increase daily calorie intake in a convenient and effective way.

Each serving delivers 50g of protein from multiple high-quality sources to help build and maintain muscle, alongside over 250g of carbohydrates to replenish glycogen stores and support recovery after intense training. Added 3g of creatine monohydrate helps support strength and performance during high-intensity workouts.

Key Benefits

• Supports muscle building and weight gain
• Provides over 1,250 calories per serving
• Delivers 50g of protein to help build and maintain muscle mass
• Contains 250g+ carbohydrates to support recovery and energy replenishment
• Includes 3g added creatine to support strength and performance
• Ideal for hard gainers and high-calorie needs
• Convenient way to boost daily calorie intake

How to Use

Add 334g (approximately 2 heaped scoops) to a blender with 710ml of water or milk.

Blend for 30–45 seconds until fully mixed.

Consume post-workout, between meals, or as needed to help meet your daily calorie and protein requirements.

Key Ingredients (Overview)

• Whey Protein Concentrate & Calcium Caseinate – high-quality protein sources
• Complex Carbohydrates – to fuel training and recovery
• Creatine Monohydrate – to support strength and performance
• Added Vitamins & Minerals – to support overall nutrition

Allergens: Contains milk, egg, wheat (gluten). May contain soy, nuts, and peanuts.

Always read the label before use.